Safety Shear Pin Replacement Procedure

The design of the 4X4 Beveler includes a shear pin for safe operation. When the torque of the machine becomes overloaded due to material jams or incorrect operation, the shear pin is designed to break, saving more valuable components from damage. An indication that this has occurred is when the cutter head stops turning when the drive motor is turning, while properly engaged with the drive pins.

The shear pin is easily replaced by the procedure shown below. Shear pins are available in 4 packs (PN 09-0018) and should always be replaced by original OEM parts for continued safe operation of the machine.

1. Pull the release knob and remove the torque restraint bracket from the tool.
2. Remove the ramp block assembly from the front of the mandrel by unscrewing the drawrod assembly.
3. Remove the mandrel from the back of the tool by rotating the feed nut, in the direction opposite of the head rotation arrow, until it comes free.
4. Rotate the drive sleeve until the hole with the broken shear pin, and the round indicator mark on the cutter head, are aligned with each other.
5. Using a 3/16" (4.8 mm) diameter punch and a hammer, gently tap out the old shear pin segment(s) through to the center bore of the cutter head.6. The drive sleeve has been designed with (4) shear pin holes. If the shear pin hole has become damaged, simply use one of the remaining holes.
7. Making sure the open shear pin holes in the drive sleeve and the cutter head are aligned. Tap the replacement shear pin into the shear pin hole from the outside until it sits just below the outer drive sleeve surface by about .010" to .020" (.25 mm to .5 mm). 8. Tool can now be reassembled for use.

· Keep all machine surfaces clean from dirt, grime, and cutting debris.
· After each use, make sure machine is free from moisture and water.
· While stored, apply rust prohibiting oil on steel surfaces if humidity is present.
· Lubricate all moving parts with general purpose grease every 8 hours of use.
· Check bit frequently and either switch to a new edge or replace if it is worn.

The 4X4 beveler covers it's entire mounting range with a series of Mounting Kits. Made up of (3) ramp blocks, (1) end plate, and (2) retaining springs, kits fit on the mandrel end and are held in place by the draw rod. Kits can be purchased for the following pipe sizes:


*OD = Outside Diameter **The 5" ramp block set is available by special order only.

LIMITED LIFETIME WARRANTY

Tri Tool Inc. warrants this tool, to the original purchaser, to be free from defects of materials or workmanship for the life of the tool. At Tri Tool's discretion, repairs or part replacement will be provided at no charge. It will be the responsibility of the equipment owner to pay for all shipping or freight charges, to and from the factory or repair facility, for all warranty repairs. Contact customer support for more information at (888) TRI TOOL.

Reference Replacement Parts List

Part No.	Description	Qty.
13-0450	Mandrel	1
23-0335	Drawrod Assembly	1
30-2798	Retaining Ring	1
33-0927	Set Screw, Half Dog	2
34-0106	Thrust Washer	1
21-0536	Cutter Head	1
32-0544	Shear Pin	1
33-0282	Button Head Screw	6
34-0256	Thrust Washer	1
35-0562	Feed Nut	1
43-0543	Retaining Cover	1
45-0308	Bushing	2
45-0310	Bushing	1
46-0487	Shear Sleeve	1
33-0361	Screws (Tool Bit)	2
99-4X4	Tool Bit	1
24-1690	Wear Plate	2
24-1694	Retaining Plate	1
32-0540	Plunger Pin	1
33-0039	Cap Screw	2
33-0285	Button Head Screw	2
33-0280	Button Head Screw	4
33-0521	Set Screw, Cup Pt.	1
33-1614	Handle Stud	4
40-0267	Compression Spring	1
42-0076	Ball Knob	4
42-0193	Knurled Knob	1
46-0492	Feed Sleeve	1
47-1242	Torque Restraint Bracket	1
48-1206	Pin Retaining Block	1
43-0582	Safety Cover	1
33-0043	Cap Screw	2

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